Title :
Integrated driving and readout circuits for CDMPI sensor
Author :
Qian, X.B. ; Li, X.P. ; Xu, Y.P. ; Fan, I.
Author_Institution :
Dept. of Mech. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A low noise integrated circuit with powerline noise reduction technique for current drive magnetic permeability interference (CDMPI) sensor was designed, which integrated the required driving and readout circuits. The sensitivity of the sensing system reached 10-9-10-10 T without averaging. The result showed the potential use of the sensor for the weak field measurements, such as magnetocardiography.
Keywords :
CMOS integrated circuits; circuit noise; magnetic permeability; magnetic sensors; readout electronics; current drive magnetic permeability interference; integrated driving circuit; low noise integrated circuit; magnetocardiography; powerline noise reduction technique; readout circuit; weak field measurements; Filters; Frequency modulation; Integrated circuit noise; Linearity; Magnetic field measurement; Magnetic noise; Magnetic sensors; Phase modulation; Preamplifiers; Wires;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464345
